Improvement in lock-hinges



M. 0. LEE.

Lock-Hinges.

No. 138,092, 4 PatentedApriI22,l873.

Witnesses: Inventor:

-f m M v Attorneys.

m PHOTDi/THOGNAPHIC c0 MM 055091155 mocsss) UNITED STATES PATENT OEEIGE.

MORTIMER 0. LEE, on NEW YORK, N. Y,

IMPROVEMENT m LOCK-HINGES.

Specification forming part of Letters Patent No. 138,092, dated April22, 1873; application .filed March 29, 1873.

To all whom it may concem:

Be it known that I, MORTIMER 0. LEE, of the city, county, and State ofNew York, have invented a new and useful Improvement in Window-BlindFastener, of which the following is a specification:

The invention relates to an improved hinge for locking window blinds andshutters, the lower or pintle portion having two shoulders orfoot-holds, with which a pawl, pivoted to the upper portion of thehinge, engages when the blind is swung open, and whereby, also, it isadapted for use upon either side of a window.

In the accompanying drawing, Figure 1 is a side view of the deviceapplied. Fig. 2 is a top view of the same. Fig. 3 is a top view, showingthe blind turned the other way and fastened by the same pawl. Figs. 4,5, and 6 are top, side, and bottom views of the projection andprojection-plate when made separate,

so as to apply the invention to hinges now in use.

Similar letters of reference indicate correspondin g parts.

A represents the casing or window frame. B is the blind or shutter. G isthe hook or pintle portion of the hinge. D is the strap or portionattached to the blind or shutter. E is the projection behind the hook orpintle F of the lower hinge. This projection may be formed by cuttingaway the bar at the base of the pintle, as seen in "Fig. 1, or it may beattached to the bar. In either case it will be raised sufficiently toform foot-holds or ratchet shoulders G at the base of the pintle. The

hinge is provided with two foot-ho1ds or ratchet-teeth, as seen in Figs.2 and 3, and the fastening answers for either blind of the window, andconsequently the hinges with their fastening need not be made in pairs,as is usual with fastenings of this description, and which is frequentlya very great inconvenience to the purchaser. His a pawl, which isattached by means of a rivet to the blind portion of the hinge, asrepresented in the drawing. The pawl is made so that it drops down byits own gravity when the blind is turned back, and catches behind one orthe other of the notches Gr, according to the side of the window onwhich the blind is placed. When the projection E is made separate so asto be attached, the projection-plate is slipped over the pintle andrests on the pintle-bar, with ears or lugs I I on its under side, whichineloses the bar, and holds the projection-plate steady.

When it is desired to close the blind, the pawl is raised, whichreleases it and allows it to swing freely.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The pintle portion E of a lock-hinge, provided withthe shoulders Gr G on its upper side adjacent to the pintle F, wherebyit is adapted for use on either side of a window, and to cooperate withthe leaf D and pawl H, as specified.

MORTIMER 0. LEE.

Witnesses T. B. MosHER, ALEX. F. RoBERTs.

